I clicked the "Submit Documentation Feedback" link in a tech ref which had the following link.
I was unaware that I was not logged in to myTI but the form was happy to let me type in my feedback for ten minutes then prove I wasn't a robot and click Submit. Not unsurprisingly I suppose my input was dumped and I was presented with "Access Denied". Clicking the browser's back button presented me with a blank form.
Please validate credentials before allowing feedback to be typed in or somehow save their efforts if they're not logged in.